FBI Special Agents Fox Mulder and Dana Scully are back!

The X-Files stars David Duchovny and Gillian Anderson spoke with ET at the premiere the new revival series at the California Science Center in Los Angeles on Tuesday, where they opened up on their emotional return to the franchise that made them household names years ago.

According to Duchovny, just reading the script for the first time brought him to tears.

"It was nostalgic," the 55-year-old Golden Globe winner told ET. "It was just seeing the, just the names on the page again you know?"

As for Anderson, she's looking forward to bring new life to the beloved series, and to give fans what they've been clamoring for since the show went off the air 13 years ago.

"I'm excited [we're giving fans] a mix of the kinds of episodes that we used to do," Anderson, 47, shared. "There's monster of the week and there's mythology, and there's comedic, and it's nice that we have enough time to give an assortment."

"I think there's something for everybody," she added.

ET was on the set of The X-Files when it first premiered in 1993, and the fresh-faced stars were just as excited back then for what the show had in store for viewers.

"The audience has no idea what they're getting themselves into every time they turn on the TV," Anderson said at the time.

The X-Files premieres Sunday, Jan. 24 following the NFC Championship Game on Fox.